Auto merge of #4553 - integer32llc:typos, r=alexcrichton
authorbors <bors@rust-lang.org>
Sat, 30 Sep 2017 08:49:52 +0000 (08:49 +0000)
committerbors <bors@rust-lang.org>
Sat, 30 Sep 2017 08:49:52 +0000 (08:49 +0000)
Fix some typos in docs and error messages


Trivial merge